Update webpack-hot-middleware from 2.19.1 to 2.20.0 in app/react

[dependencies]

webpack-hot-middleware has been updated to 2.20.0 in app/react by dependencies.io

2.20.0

No content found.

[codecov]

Codecov Report

Merging #2060 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2060   +/-   ##
=======================================
  Coverage   21.34%   21.34%           
=======================================
  Files         262      262           
  Lines        5767     5767           
  Branches      695      694    -1     
=======================================
  Hits         1231     1231           
+ Misses       3999     3995    -4     
- Partials      537      541    +4

Impacted Files	Coverage Δ
...react-native/src/manager/components/PreviewHelp.js	0% <0%> (ø)	⬆️
addons/storyshots/src/require_context.js	0% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-build.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/layout.js	12.5% <0%> (ø)	⬆️
app/react/src/client/preview/error_display.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/libs/hierarchy.js	48.8% <0%> (ø)	⬆️
addons/knobs/src/KnobManager.js	32% <0%> (ø)	⬆️
lib/ui/src/modules/ui/configs/handle_keyevents.js	33.33% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/left_panel.js	25.71% <0%> (ø)	⬆️
.../ui/src/modules/ui/components/left_panel/header.js	29.62% <0%> (ø)	⬆️
... and 13 more

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